RFC 3719 (rfc3719) - Page 1 of 15


Recommendations for Interoperable Networks using Intermediate System to Intermediate System (IS-IS)



Alternative Format: Original Text Document



Network Working Group                                     J. Parker, Ed.
Request for Comments: 3719                             Axiowave Networks
Category: Informational                                    February 2004


           Recommendations for Interoperable Networks using
           Intermediate System to Intermediate System (IS-IS)

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

   This document discusses a number of differences between the
   Intermediate System to Intermediate System (IS-IS) protocol as
   described in ISO 10589 and the protocol as it is deployed today.
   These differences are discussed as a service to those implementing,
   testing, and deploying the IS-IS Protocol.  A companion document
   discusses differences between the protocol described in RFC 1195 and
   the protocol as it is deployed today for routing IP traffic.

Table of Contents

   1.  Introduction. . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Constants That Are Variable . . . . . . . . . . . . . . . . .  2
   3.  Variables That Are Constant . . . . . . . . . . . . . . . . .  4
   4.  Alternative Metrics . . . . . . . . . . . . . . . . . . . . .  6
   5.  ReceiveLSPBufferSize. . . . . . . . . . . . . . . . . . . . .  6
   6.  Padding Hello PDUs. . . . . . . . . . . . . . . . . . . . . .  8
   7.  Zero Checksum . . . . . . . . . . . . . . . . . . . . . . . .  9
   8.  Purging Corrupted LSPs. . . . . . . . . . . . . . . . . . . . 10
   9.  Checking System ID in Received point-to-point IIH PDUs. . . . 10
   10. Doppelganger LSPs . . . . . . . . . . . . . . . . . . . . . . 11
   11. Generating a Complete Set of CSNPs. . . . . . . . . . . . . . 11
   12. Overload Bit. . . . . . . . . . . . . . . . . . . . . . . . . 12
   13. Security Considerations . . . . . . . . . . . . . . . . . . . 13
   14. References. . . . . . . . . . . . . . . . . . . . . . . . . . 13
   15. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 14
   16. Author's  Address . . . . . . . . . . . . . . . . . . . . . . 14
   17. Full Copyright Statement. . . . . . . . . . . . . . . . . . . 15




Parker                       Informational